The 2014–15 Nemzeti Bajnokság I, also known as NB I, was the 113th season of top-tier football in Hungary. The league is officially named OTP Bank Liga for sponsorship reasons. The season began 26 July 2014 and concluded on 1 June 2015. Debrecen are the defending champions having won their seventh Hungarian championship last season. For the first time at a Nemzeti Bajnokság I seasons, match officials used vanishing foam for free kicks. In the Groupama Aréna (FTC) the goal-line technology was used. Videoton won the league for the second time.